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IKMC 2005 - Grades 9-10 - Self-study Question 10

IKMC · IKMC 2005 - Grades 9-10 - Self-study

Question 10

A mother kangaroo and her baby Jumpy go around a stadium of perimeter 330 m. Both make one jump per second; the mother jumps 5 m and Jumpy 2 m. They start at the same point in the same direction. After 25 seconds Jumpy stops while his mother continues. How long is it until she is next to Jumpy again?

Question illustration
  1. 15 sec
  2. 24 sec
  3. 51 sec
  4. 66 sec
  5. 76 sec